[poppler] Poppler 0.16.5 released

[Albert Astals Cid]

Available from
http://poppler.freedesktop.org/poppler-0.16.5.tar.gz

Changes against the 0.16.4 release:
core:
 * Fix a memleak in AnnotScreen::initialize
 * Properly initialize pageObjectNum to 0. Bug #35925

utils:
 * pdftotext: bbox coordinates are relative to MediaBox size, not CropBox size

cpp:
 * Fix page_transition::operator=

Testing, patches and bug reports welcome.

Albert